<mat-action-list>
        <button mat-list-item (click)="openLink(1,$event)"> 编辑 </button>
        <button mat-list-item (click)="openLink(2,$event)"> 查看 </button>
        <button mat-list-item (click)="openLink(3,$event)"> 提交清单 </button>
</mat-action-list>